US3937346A - Movable stacking device - Google Patents

Movable stacking device Download PDF

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Publication number
US3937346A
US3937346A US05/503,103 US50310374A US3937346A US 3937346 A US3937346 A US 3937346A US 50310374 A US50310374 A US 50310374A US 3937346 A US3937346 A US 3937346A
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US
United States
Prior art keywords
base frame
frame
rotation head
rollers
stacking device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/503,103
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English (en)
Inventor
Hans Robert van der Laan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CUBIC HANDLING SYSTEMS NV
Original Assignee
CUBIC HANDLING SYSTEMS NV
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Publication of US3937346A publication Critical patent/US3937346A/en
Assigned to CITICORP NORTH AMERICAN INC. reassignment CITICORP NORTH AMERICAN INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HYSTER, COMPANY
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07545—Overhead guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/147—Whole unit including fork support moves relative to mast

Definitions

  • the present invention relates to a movable stacking device comprising a substructure, a vertical mast vertically arranged thereon and composed of a fixed outer frame and an inner frame vertically guided by the outer frame, an operating platform vertically guided by the inner frame and comprising a base frame extending transversely to the substructure, a rotation head horizontally guided by the base frame and a fork device or similar means adapted to carry a load and being supported by the rotation head for rotation about a vertical shaft, the outer frame and the inner frame of the mast each consisting of two spaced sections, such as channel beams or I beams, extending transversely to the substructure, the webs of said sections extending in longitudinal direction of the substructure, rollers or similar means being mounted on the sections of one frame which act on flanges of the adjacent sections of the other frame of the mast and further rollers or similar means being mounted on the operating platform which act on the flanges of the inner frame.
  • Such a movable stacking device is well known in practice and is used in particular for stacking and unstacking of general cargo in warehouses.
  • the width of the aisles should exceed the total width of the movable stacking device, but one wishes to keep the clearance on both sides of the stacking device as small as possible. In this respect one has in mind a clearance on either side of the stacking device of a magnitude of 100 mm.
  • This forward or possibly rearward tilting movement is taken up in a known manner by the rollers between the sections of the inner frame and the outer frame and by the rollers between the operating platform and the sections of the inner frame.
  • the moment as a result of the tilting movement in forward or possibly rearward direction is shown in FIG. 1. of the drawings as M1. Taking up this moment does not present particular difficultie when the prongs of the fork device are pointing straight ahead and extend in the centre of the stacking device, because then the sections are loaded parallel to the web of each section. Since sections are destined to take up loads in said direction this does not create any difficulties.
  • a stacking device of the afore-mentioned type is described among other things in the British patent specification No. 1,210,349, although in said patent specification not all details are described and, moreover, in the stacking device according to said literature it is not an operating platform that moves upwards along the inner frame, but only a carrier device for the fork device.
  • the operator remains on the substructure of the stacking device.
  • Stacking devices in which the operator does move upwards are known per se and and are also mentioned in the British patent specification No. 1,210,349.
  • the invention aims at avoiding the drawbacks of the generally known stacking device and this is accomplished according to the invention in that the outer frame and the inner frame each comprise in addition a vertical box girder, said box girders being arranged one behind the other on the longitudinal axis of the substructure, the box girder of the inner frame being vertically movable relative to the box girder of the outer frame by means of guide plates or the like, but being unable to move transversely thereto, that the sections are each time connected to the corresponding box girder by rigid transverse beams and that the side of the operating platform remote from the base frame comprises additional rollers or similar means co-operating with a vertically extending guide rail on the box girder of the inner frame.
  • both the outer frame and the inner frame are enlarged with a torsion-free box girder.
  • the moment M1 is taken up by the flanges of the sections.
  • the moment M2 is not transmitted to the sections, but directly to the box girders which on account of their shape offer a great resistance.
  • the moment M2 is transmitted from the operating platform via the guide rail to the box girder of the inner frame and subsequently via the guide plates to the box girder of the outer frame.
  • the operator is moved upwards on the operating platform along with the load.
  • the cross beams connecting the sections to the box girders are preferably likewise constructed as box girders. Consequently a very fine design is arrived at according to which no longitudinal stiffening is required and a good view for the operator towards the rear is maintained.
  • Said lateral tolerance between stacking device and racks is also influenced by the design of the rotation head.
  • said width is rather considerable because in order to take up the moment M2 the rotation head must be guided tilt-free by the base frame of the operating platform. This means in general that at least two rollers should be arranged transversely and one beside the other. It is obvious that consequently the width of the rotation head is considerable.
  • a similar design is known in practice and is described among other things in the British patent specification No. 750,793, in particular FIGS. 11 and 12.
  • the invention aims at maintaining the rotation head as narrow as possible so that one may do each time with only one roller in the transverse direction. According to the invention this is rendered possible in that a stacking device, in which the part of the rotation head co-operating with the base frame of the operating platform is U-shaped and at the lower side of the upper flange and at the upper side of the lower flange of the U a roller or similar means is mounted which is rotatable about a shaft extending perpendicularly to the upper flange and the lower flange respectively, said rollers or similar means co-operating with flanges on the base frame which are situated in vertical planes and extend transversely to the substructure and on the web of the U of the rotation head a roller or similar means is mounted which is rotatable about a shaft extending perpendicularly to the web, said roller or similar means being adapted to co-operate with a guide path of the base frame situated in a horizontal plane and likewise extending transversely to the base frame, is characterized
  • the intermediate carriage preferably comprises at least two rollers or the like mounted transversely to the substructure and one beside the other, said rollers being rotatable about shafts mounted perpendicularly to the intermediate carriage, said rollers or the like co-operating with horizontal flanges on the base frame, above and below the rollers or the like, there being mounted at the four ends of the rectangular intermediate carriage chain wheels which are rotatable about vertical shafts and around the upper and lower pair of chain wheels each time an endless chain is laid of which each time one point is fixedly connected to the rotation head and one point fixedly to the base frame.
  • the use of chains and chain wheels prevents any tendency to tilt of the rotation head relative to the base frame.
  • the chain transmission presents still another particular advantage, namely that at a complete stroke of the rotation head transversely to the substructure the intermediate carriage only carries out half a stroke. This may be used advantageously for the lateral movement of the rotation head.
  • the jack or similar means acts on the one hand on a point of the base frame and on the other hand on a point of the intermediate carriage, the chains ensuring the doubling of the stroke of the rotation head.
  • the fork device while being rotatable about a vertical shaft, is connected to the free end of the rotation head.
  • the fork device may thereby be rotated through 180° relative to the rotation head.
  • the positions to the extreme left and to the extreme right of the fork device will be chosen when putting loads into racks, the stacking device being positioned in the aisle between the racks.
  • the rotation head should be able to be tilted slightly relative to the base frame of the operating platform. According to the invention this is accomplished in that of one of the chains the point with which the chain is fixedly connected to the base frame is somewhat adjustable relative to the base frame in order to effect a slight tilting of the rotation head relative to the base frame.
  • the point of the upper chain is adjustable.
  • FIG. 1 is a view in perspective of the stacking device according to the invention
  • FIG. 2 is a top plan view of the stacking device according to the invention on an enlarged scale
  • FIG. 3 is an exploded diagrammatical view of the base frame of the operating platform with the rotation head thereon;
  • FIG. 4 is a cross-section through the operating platform with part of the rotation head.
  • FIG. 1 the substructure of the stacking device according to the invention is indicated by reference numeral 1, the wheels by 2, the counter-weight and the motor compartment by 3, the fixed outer frame of the mast structure by 4, the inner frame movable relative to the outer frame 4 by 5, the operating platform movable relative to the inner frame 5 by 6, the rotation head by 7, and the fork device by 8.
  • the load to be lifted is schematically shown as a cube-shaped load and is designated by 9.
  • FIG. 1 shows, moreover, the moments M1, M2 and M3 discussed in the preceding text.
  • the outer frame 4 comprises two channel beams facing each other, see FIG. 2, said channel beams being designated by 14.
  • the inner frame 5 comprises in a known manner two I beams designated by 15.
  • the inner frame 5 is vertically guided in the outer frame 4 with the aid of two sets of rollers.
  • One set of rollers, indicated by 16 in FIG. 2 is secured in the upper end of the outer frame, said rollers being rotatable about shafts extending perpendicularly to the web of the channel beams 14.
  • the rollers 16 co-operate with the outer flanges of the I beams 15 of the inner frame 5.
  • the other set of rollers (not shown) is secured to the web of the I beams 15 and the inner frame 5, namely to the lower end of the inner frame 5.
  • These rollers co-operate with the flanes of the channel beams 14 of the outer frame 4.
  • the operating platform 6 comprises in a known manner at the left hand and right hand side two sets of rollers designated by 17. Said rollers 17 are guided between the other flanges of the I beams 15 of the inner frame 5.
  • a moment M1 exercized by the weight G of the load 9 in forward direction is transmitted to the substructure 1 of the stacking device. Efforts are made to maintain said moment M1 as small as possible by moving the position of the operator as much as possible to the rear.
  • box girders 18 and 19 are disposed on the centre line of the stacking device one behind the other.
  • Box girder 18 is connected via torsion-rigid transverse beams 20 to the channel beams 14.
  • the transverse beams 20 and 21 are curved and in cross-section also box-shaped.
  • the box girder 19 of the inner frame 5 is adapted to be moved in vertical direction relative to the box girder 18 of the outer frame 4, but is held in transverse direction by guide plates designated by 22.
  • One set of guide plates 22 are secured to the upper end of the box girder 18 and another set of guide plates 22 are secured to the lower end of box girder 19.
  • a kind of spine-like design of the inner frame 4 and the outer frame 5 is arrived at.
  • this design is very torsion-rigid, it also offers the possibility to place the operator's seat as much as possible to the rear and yet to maintain a good view on the load, see FIG. 2.
  • At the front of the box girder 19 there is secured a vertically extending guide rail 23 with which two sets of superimposed rollers 24 may co-operate, said rollers being mounted at the rear side of the operating platform 6.
  • a second measure which contributes to keeping the aisle widths in the warehouses as small as possible is a reduction of the width of the rotation head. If namely one enters an aisle with the fork device already swung laterally out, the rotation head is in the outermost right hand position, shown in FIG. 1. In this way the load 9 projects at the left as little as possible beyond the stacking device. In this position the load will project at the left the more according as the rotation head is broader. A rotation head which is as narrow as possible therefore reduces the necessary clearance between stacking device and racks.
  • the operating platform 6 comprises a base frame integral therewith.
  • Said base frame mainly comprises a horizontal channel beam 25 at the top, a horizontal channel beam 26 at the bottom and a horizontal I beam 27 extending parallel to said channel beams 25 and 26.
  • At the ends of the channel beams 25 and 26 and the I beam are connected by vertical end plates designated by 28 and 29.
  • the base frame consisting of the channel beams 25 and 26, the I beam 27 and the end plates 28 and 29 constitutes a rigid unit.
  • the part of the rotation head 7 facing the base frame has a U-shape.
  • Said U-shape is formed by a vertical web 30, and upper flange 31 and a lower flange 32.
  • the rotation head 7 has been manufactured in a known manner by welding.
  • a roller 33 which is rotatable about a vertical shaft.
  • a roller 34 which is likewise rotatable about a vertical shaft.
  • the rollers 33 and 34 act on the flanges of the channel beams 25 and 26 respectively. Said rollers 33 and 34 transmit in a known manner the moment M1 from the rotation head 7 to the operating platform.
  • a roller 35 which is mounted on the web 30 and is rotatable about a horizontal shaft. Said roller co-operates with a set of flanges of the I beam 27. Since the rollers 33, 34 and 35 are of the single type, said guiding system is not capable of taking up the lateral moment M2.
  • a separate intermediate carriage is used, designated by 36, which, while guided in the horizontal direction, is supported by the base frame.
  • said intermediate carriage 36 comprises a channel beam 37 on the web of which two rollers 38 are mounted which are rotatable about a horizontal shaft. Said rollers 38 are situated considerably apart in horizontal direction and co-operate with the other flanges of the I beam 27. It will be clear that in this way the channel beam 37 of the intermediate carriage 36 is guided tilt-free in the horizontal direction relative to the base frame.
  • a plate designated by 39, which together with the channel beam 37 constitutes the frame of the intermediate carriage 36.
  • said frame is diagrammatically shown as a flat plate.
  • Said chain rollers are shown in FIG. 3 by reference numerals 40, 41, 42 and 43 and are rotatable about vertical shafts. In FIG. 4 only the chain rollers 40 and 42 are visible.
  • Both the chain 44 and the chain 45 are connected by means of a chain anchor 46 and 47 respectively with the web 30 of the rotation head 7.
  • the chains 44 and 45 are each connected via another chain anchor, designated by 48 and 49 respectively, to a part of the base frame.
  • the chain transmission between the rotation head and the intermediate carriage prevents the rotation head from tilting laterally. In this manner the lateral moment M2 is effectively taken up without the necessity of the rotation head being wide.
  • the intermediate carriage 36 is also used for the lateral movement of the rotation head relative to the base frame. At a point of the intermediate carriage 36, designated by 50, the end of a hydraulic jack 51 acts, the other end of which being secured in the base frame, see FIGS. 3 and 4. For laterally moving the rotation head 7 the intemediate carriage 36 is therefore laterally shifted.
  • the chains 44 and 45 bring about a doubling of the stroke.
  • this slight tilting in backward direction of the rotation head 7 may be effected in a simple way by not connecting the chain anchor 49 directly to the base frame but by connecting it with a bow designated by 52 in FIG. 4, on which bow 52 there acts a hydraulic cylinder 53 which at the other end is secured to the base frame.
  • the hydraulic cylinder 53 can now adjust the chain anchor somewhat and as a result the entire rotation head 7 with the fork device can be tilted somewhat backwards.
  • the invention provides a stacking device capable of operating up to a very considerable height with a minimum clearance between the stacking device and the racks of a warehouse.
  • the shafts of the rollers which ensure the guiding of the sections and the guide plates can be removed from the sections and the box girders respectively when the mast is in retracted condition.
  • the inner frame can be removed from the outer frame without the necessity of sliding the inner frame upwards out of the outer frame. This is of great importance in connection with repairs and the like.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US05/503,103 1973-09-07 1974-09-04 Movable stacking device Expired - Lifetime US3937346A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7312385.A NL157871B (nl) 1973-09-07 1973-09-07 Verrijdbare stapelinrichting.
NL7312385 1973-09-07

Publications (1)

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US3937346A true US3937346A (en) 1976-02-10

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US05/503,103 Expired - Lifetime US3937346A (en) 1973-09-07 1974-09-04 Movable stacking device

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US (1) US3937346A (fi)
JP (2) JPS5072369A (fi)
BE (1) BE819026A (fi)
BR (1) BR7407424D0 (fi)
CA (1) CA1004185A (fi)
CH (1) CH587185A5 (fi)
DE (1) DE2442462A1 (fi)
ES (1) ES430087A1 (fi)
FI (1) FI53960C (fi)
FR (1) FR2243144B1 (fi)
GB (1) GB1475939A (fi)
IT (1) IT1019179B (fi)
NL (1) NL157871B (fi)
SE (1) SE386651B (fi)
ZA (1) ZA745697B (fi)

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US4236862A (en) * 1979-04-16 1980-12-02 The Raymond Corporation Material handling apparatus
US4439102A (en) * 1979-04-16 1984-03-27 The Raymond Corporation Material handling apparatus
US4470750A (en) * 1981-10-16 1984-09-11 Steinbock Gmbh Conveying apparatus
US4499971A (en) * 1983-04-22 1985-02-19 Crown Controls Corporation Material handling vehicle having improved chain monitoring
US4527943A (en) * 1983-05-11 1985-07-09 The Raymond Corporation Load handling method and apparatus
US4543031A (en) * 1983-04-22 1985-09-24 Crown Controls Corporation Apparatus for sideshift carriage control
US4552250A (en) * 1983-04-22 1985-11-12 Crown Controls Corporation Lift truck
US4690247A (en) * 1985-03-14 1987-09-01 Nippon Light Metal Co., Ltd. Inspection car for bridge construction of a high level road
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US5009560A (en) * 1988-12-06 1991-04-23 Yellow Freight System, Inc. Mixed freight handling system
US5011363A (en) * 1989-12-05 1991-04-30 Crown Equipment Corporation Extend and retract control for fork lifts
US5067867A (en) * 1988-12-06 1991-11-26 Yellow Freight System, Inc. Conveyor for mixed freight handling system
US5088873A (en) * 1988-12-06 1992-02-18 Yellow Freight System, Inc. Manipulator mixed freight handling system
US5143180A (en) * 1989-02-17 1992-09-01 Harper Clark N Load lift truck
US5174708A (en) * 1988-12-06 1992-12-29 Yellow Freight System, Inc. Boom mounted multiple stage freight lift apparatus
US5176485A (en) * 1988-12-06 1993-01-05 Yellow Freight System, Inc. Freight manipulator with articulated cantilever boom
US5190435A (en) * 1988-11-29 1993-03-02 Washington Chain And Supply, Inc. Fork lift truck
US5984050A (en) * 1997-05-29 1999-11-16 The Raymond Corporation Carriage suspension for lift truck
EP1369376A1 (en) * 2002-06-05 2003-12-10 BT Industries Telescopic truck mast with balancing cylinder for the dead weight
US20060245893A1 (en) * 2005-03-01 2006-11-02 Jungheinrich Aktiengesellschaft Industrial truck
US20070166142A1 (en) * 2005-08-02 2007-07-19 Jacques Sentenne Platform for forklift
CN106044034A (zh) * 2016-07-25 2016-10-26 诺力机械股份有限公司 一种包含输送线和堆垛机的自动化仓储系统
CN106743019A (zh) * 2017-01-03 2017-05-31 北京环境特性研究所 自动物流塔系统
US20170349418A1 (en) * 2016-06-06 2017-12-07 Jungheinrich Aktiengesellschaft Industrial truck comprising a device for reducing vibrations
CN107814122A (zh) * 2017-11-24 2018-03-20 醴陵市绿源商贸有限公司 一种智能仓储方法及圆形智能仓储装置
US10266379B2 (en) 2016-05-02 2019-04-23 Jungheinrich Aktiengesellschaft Industrial truck comprising a device for reducing transverse vibrations
US10308489B2 (en) 2016-06-24 2019-06-04 Jungheinrich Aktiengesellschaft Industrial truck comprising means for suppressing and reducing vibrations
US10329131B2 (en) * 2016-05-12 2019-06-25 Jungheinrich Aktiengesellschaft Industrial truck comprising a device for reducing vibrations
CN110294246A (zh) * 2019-03-20 2019-10-01 黄国龙 一种基于自动定位实现物品高处移送的小型分拣机
US10427924B2 (en) 2016-05-02 2019-10-01 Jungheinrich Aktiengesellschaft Industrial truck comprising a device for reducing vibrations
CN110697593A (zh) * 2019-10-18 2020-01-17 徐州市凯诺机械有限公司 一种建筑工地用升降电梯
US10800641B2 (en) 2016-06-28 2020-10-13 Jungheinrich Aktiengesellschaft Outrigger comprising an apparatus for reducing vibrations
CN111776669A (zh) * 2020-08-03 2020-10-16 合肥宇胜信息科技有限公司 一种种子自动拆包机用上料机构
CN112918356A (zh) * 2021-03-11 2021-06-08 八时物流科技(成都)有限公司 一种具有多方位装卸货箱功能的物流车
CN113023633A (zh) * 2021-04-01 2021-06-25 陕西电力建设集团有限公司 一种移动式电力施工升降台
CN113321018A (zh) * 2021-05-11 2021-08-31 浙江立镖机器人有限公司 能折叠的卸货装置

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JPS55164299U (fi) * 1979-05-14 1980-11-26
JPS55167991U (fi) * 1979-05-18 1980-12-03
DE3041910C2 (de) * 1980-11-06 1986-01-23 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg Hubgerüst für Hublader
NL191168C (nl) * 1982-02-12 1995-03-01 Lely Nv C Van Der Kuilvoersnijder.
GB2125003A (en) * 1982-08-06 1984-02-29 Translift Material Handling Forklift truck
GB2162813B (en) * 1982-08-12 1988-01-20 Raygo Inc Load carrier assembly
GB2198414B (en) * 1986-12-02 1990-04-18 Lancer Boss Ltd Load handling vehicle
JPH0518392Y2 (fi) * 1987-05-15 1993-05-17
JPH0475813U (fi) * 1990-11-09 1992-07-02
JP4641397B2 (ja) * 2004-09-03 2011-03-02 日本輸送機株式会社 マスト装置
ATE529371T1 (de) * 2006-03-03 2011-11-15 Eric O'keeffe Gabelstapler
CN106829296A (zh) * 2017-03-02 2017-06-13 江苏高科物流科技股份有限公司 一种载货台可旋转的堆垛机以及自动化立体仓库
CN108910784A (zh) * 2018-08-12 2018-11-30 惠州市无龄康态健康科技有限公司 一种自动化移载搬运装置
CN109160456A (zh) * 2018-09-18 2019-01-08 罗伯泰克自动化科技（苏州）有限公司 一种双立柱堆垛机载货台
CN111017809A (zh) * 2020-03-03 2020-04-17 昆明昆船物流信息产业有限公司 一种横梁式堆垛机及其使用方法
CN111703798B (zh) * 2020-06-09 2024-01-02 北京极智嘉科技股份有限公司 一种搬运机器人、取箱方法、上货方法及仓储物流系统
CN215400972U (zh) * 2021-07-23 2022-01-04 杭州海康机器人技术有限公司 一种搬运机器人

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US3460699A (en) * 1967-10-27 1969-08-12 Eaton Yale & Towne Movable upright assembly with a laterally and pivotally mounted carrier
US3851732A (en) * 1973-02-08 1974-12-03 Towmotor Corp Mast and carriage for a lift truck

Patent Citations (3)

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US3061046A (en) * 1961-07-27 1962-10-30 Multi Lift Co Load hoisting mast with roller chain anti-friction means
US3460699A (en) * 1967-10-27 1969-08-12 Eaton Yale & Towne Movable upright assembly with a laterally and pivotally mounted carrier
US3851732A (en) * 1973-02-08 1974-12-03 Towmotor Corp Mast and carriage for a lift truck

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176732A (en) * 1978-01-12 1979-12-04 Nordskog Robert A Self-propelled aircraft passenger elevator
US4236862A (en) * 1979-04-16 1980-12-02 The Raymond Corporation Material handling apparatus
US4439102A (en) * 1979-04-16 1984-03-27 The Raymond Corporation Material handling apparatus
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AU7302274A (en) 1976-03-11
FR2243144B1 (fi) 1976-12-31
IT1019179B (it) 1977-11-10
BR7407424D0 (pt) 1975-07-08
JPH0136878Y2 (fi) 1989-11-08
FR2243144A1 (fi) 1975-04-04
JPS60119099U (ja) 1985-08-12
NL7312385A (nl) 1975-03-11
GB1475939A (en) 1977-06-10
BE819026A (fr) 1975-02-20
FI260774A (fi) 1975-03-08
SE7410441L (fi) 1975-03-10
ES430087A1 (es) 1976-10-16
JPS5072369A (fi) 1975-06-14
FI53960B (fi) 1978-05-31
DE2442462A1 (de) 1975-03-20
FI53960C (fi) 1978-09-11
SE386651B (sv) 1976-08-16
CH587185A5 (fi) 1977-04-29
NL157871B (nl) 1978-09-15
ZA745697B (en) 1975-10-29
CA1004185A (en) 1977-01-25

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